气候变化领域集成服务门户(CCPortal): Large spatial variations in the flux balance along the front of a Greenland tidewater glacier

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DOI	10.5194/tc-13-911-2019
	Large spatial variations in the flux balance along the front of a Greenland tidewater glacier
	Wagner T.J.W.; Straneo F.; Richards C.G.; Slater D.A.; Stevens L.A.; Das S.B.; Singh H.
发表日期	2019
ISSN	19940416
EISSN	13
起始页码	911
结束页码	925
卷号	13 期号:3
英文摘要	The frontal flux balance of a medium-sized tidewater glacier in western Greenland in the summer is assessed by quantifying the individual components (ice flux, retreat, calving, and submarine melting) through a combination of data and models. Ice flux and retreat are obtained from satellite data. Submarine melting is derived using a high-resolution ocean model informed by near-ice observations, and calving is estimated using a record of calving events along the ice front. All terms exhibit large spatial variability along the ∼ 5 km wide ice front. It is found that submarine melting accounts for much of the frontal ablation in small regions where two subglacial discharge plumes emerge at the ice front. Away from the subglacial plumes, the estimated melting accounts for a small fraction of frontal ablation. Glacier-wide, these estimates suggest that mass loss is largely controlled by calving. This result, however, is at odds with the limited presence of icebergs at this calving front-suggesting that melt rates in regions outside of the subglacial plumes may be underestimated. Finally, we argue that localized melt incisions into the glacier front can be significant drivers of calving. Our results suggest a complex interplay of melting and calving marked by high spatial variability along the glacier front. © 2019 Author(s).
学科领域	discharge; glacier; glacier retreat; iceberg calving; plume; spatial variation; subglacial environment; tidewater glacier; underwater environment; Arctic; Greenland
语种	英语
scopus关键词	discharge; glacier; glacier retreat; iceberg calving; plume; spatial variation; subglacial environment; tidewater glacier; underwater environment; Arctic; Greenland
来源期刊	The Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118909
作者单位	Department of Physics and Physical Oceanography, University of North Carolina, Wilmington, NC 28403, United States; Scripps Institution of Oceanography, University of California at San Diego, San Diego, CA 92093, United States; Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS B2Y 4A2, Canada; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, United States
推荐引用方式 GB/T 7714	Wagner T.J.W.,Straneo F.,Richards C.G.,et al. Large spatial variations in the flux balance along the front of a Greenland tidewater glacier[J],2019,13(3).
APA	Wagner T.J.W..,Straneo F..,Richards C.G..,Slater D.A..,Stevens L.A..,...&Singh H..(2019).Large spatial variations in the flux balance along the front of a Greenland tidewater glacier.The Cryosphere,13(3).
MLA	Wagner T.J.W.,et al."Large spatial variations in the flux balance along the front of a Greenland tidewater glacier".The Cryosphere 13.3(2019).